Design Guideline for Distribution Blocks, Power Blocks
and Power Terminals

Derating
according to Ambient* Temperature (°F) to maintain
working temperature of 185°F

Ambient Temperature
(°F)

86°

95°

104°

113°

122°

131°

140°

149°

158°

167°

Derating Coefficient
(d)

1

1

1

0.94

0.88

0.82

0.75

0.67

0.58

0.47

*environment
around the terminal blocks inside the enclosure

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WARNING
Pentair products shall be installed and used only as indicated in Pentair's product instruction sheets and training materials. Instruction sheets are available at www.erico.pentair.com and from your Pentair customer service representative. Improper installation, misuse, misapplication or other failure to completely follow Pentair's instructions and warnings may cause product malfunction, property damage, serious bodily injury and death and/or void your warranty.